Grate-bar



(No Model.) W H CAMBRY.

GRATE BAE. 110,291,292. Patented Jam.V 1, 188.4.

ffy-l.

' VENTOR ATTORN EYS UNITED STATES PATENT OFFICE..

WILLIAM H. OAMBRY, OF EAST SAGINAW, MICHIGAN.

GRATE- BAR.

SPECIFICATION forming part of Letters Patent No. 291,292, dated January 1, 1884.

' Application filed June 23, 1883. (No model.) I

.To 2l/ZZ whom t may concern:

Be it known that I, WM. H. GAMBRY, a citizen of the United States, residing at East Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Grate-Bars; and I do declare the following to bea full, cle-ar, and exact description of the invention, such as will enable others skilled in the art to which 'it appertains to make and use the same, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon, which form a part of this specification.

Figure l of the drawings isatop View. Fig. 2 is a side View, and Fig. 3 is an end view.

This invention has relation to improvements in grate-bars; and it consists in the construction and novel arrangement of parts, as will be hereinafter more fully set forth and claimed.

In the accompanying drawings, the letters a a designate the Vertical longitudinal side anges of the bar, the lower edges of which are regularly convex, being deepest at their central portions. The top of the bar is level and is terminated by the sloping ends b b. Through the top of the bar are the oblique transverse slots c, which extend in series from the slope b at an end of the bar to that at the other end thereof. These oblique slots are separated from each other by the oblique connections d, which extend from one side ilangey to the other, and are of equal depth throughout the length of the bar. Between the central portions of the side flanges extends a strong brace-connection, e, the depth of which is nearly equal to that of the deepest parts of the side iianges. This grate-bar is designed to vbe very strong and serviceable,

slots and the connections d, separating the same, will be found very useful in furnaces,

as the operations of the fireman in raking in the direction of the length of the bar will effect a pulverization ofthe coarser results of the combustion, so that they will readily pass downward between the connections d, which taper downward.

I am aware that it is not new to provide a grate-bar with longitudinal vertical side flanges and oblique transverse slots which alternate with oblique transverse connections, and therefore do not claim such, broadly.

Having described this invention, what I claim, and desire to secure by Letters Patent 1s- As an improved article of manufacture, the grate-bar herein described, consisting of the vertical longitudinal side flanges, a, having convex lower edges and tapering toward each end, the transverse end connections having sloping portions b, extending from side flange to side flange, and to the lower edges of the side flanges, the series of oblique transverse bars d, alternating with oblique slots, and extending from side iiange to side flange, and the vertical transverse central brace, e, connecting the side iianges and extending nearly to the convex edges thereof, the whole formed entire and without marginal projections or lugs, as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. OAMBRY.

Witnesses:

HARRY F. WIGKEs, E. C. EWEN. 

